WO2003056418A1 - An electromagnetic induction electronic board with antenna arrayed in gridding inside - Google Patents

An electromagnetic induction electronic board with antenna arrayed in gridding inside Download PDF

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Publication number
WO2003056418A1
WO2003056418A1 PCT/CN2002/000689 CN0200689W WO03056418A1 WO 2003056418 A1 WO2003056418 A1 WO 2003056418A1 CN 0200689 W CN0200689 W CN 0200689W WO 03056418 A1 WO03056418 A1 WO 03056418A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna array
layer
induction layer
built
diaphragm
Prior art date
Application number
PCT/CN2002/000689
Other languages
English (en)
French (fr)
Inventor
Xuanming Shi
Original Assignee
Tai Guen Enterprise Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN01279677.8U external-priority patent/CN2512043Y/zh
Priority claimed from CN 02130933 external-priority patent/CN1242357C/zh
Application filed by Tai Guen Enterprise Co., Ltd filed Critical Tai Guen Enterprise Co., Ltd
Priority to JP2003556875A priority Critical patent/JP3989441B2/ja
Priority to EP02771993A priority patent/EP1469376A4/en
Priority to KR1020047010326A priority patent/KR100724834B1/ko
Priority to US10/500,419 priority patent/US7486270B2/en
Priority to AU2002338136A priority patent/AU2002338136A1/en
Publication of WO2003056418A1 publication Critical patent/WO2003056418A1/zh

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S345/00—Computer graphics processing and selective visual display systems
    • Y10S345/905—Display device with housing structure

Definitions

  • the invention relates to an electronic whiteboard, in particular to an electronic whiteboard with a built-in diaphragm antenna array grid electromagnetic induction layer that is low in cost, easy to manufacture, and has high recognition accuracy, and belongs to the field of electronic technology. Background technique
  • An object of the present invention is to provide a built-in diaphragm antenna array network in response to the shortcomings of the prior art.
  • the electronic whiteboard with a grid electromagnetic induction layer has low cost, simple manufacturing, and high accuracy of data collection and identification.
  • Another object of the present invention is to provide an electronic whiteboard with a built-in diaphragm antenna array grid electromagnetic induction layer, which has a long service life and simple maintenance.
  • An electronic whiteboard with a built-in diaphragm antenna array grid electromagnetic induction layer includes a writing input portion, a covering frame portion surrounding the periphery, and a control circuit device.
  • the writing input portion has a multilayer structure and is sandwiched in a frame. It includes a surface writing layer, an input sensing layer, and a bottom layer.
  • the input sensing layer is provided between the writing layer and the bottom layer.
  • the output of the sensing layer is connected to a control circuit.
  • the sensing layer is an antenna array along the X and Y directions provided on the insulating diaphragm. The space surrounded by each array grid constitutes a sensing unit.
  • the area of the sensing layer is the same as or smaller than that of the writing layer and the bottom layer, that is, the sensing layer is completely or partially attached between the writing layer and the bottom layer.
  • the sensing layer is attached at one or the center of the writing range of the writing input section.
  • a shielding layer is provided behind the induction layer.
  • a buffer layer is provided between the sensing layer and the bottom layer, or a buffer layer is provided between the sensing layer and the shielding layer.
  • the sensing layer can also be an antenna array printed on an insulating membrane along the X and Y axis directions, and the space surrounded by each grid constitutes a sensing sheep element. To reduce costs, the insulation diaphragm is made of film.
  • the sensing layer can be an antenna array formed by copper-platinum etching over an insulating diaphragm, a flexible printed circuit (FPC) antenna array, or a silver paste or a silver paste carbon paste printed on the insulating diaphragm. Antenna array.
  • the sensing layer can be printed on both sides of the insulating diaphragm, or printed on one side of the insulating diaphragm, and the two layers of the insulating diaphragm are stacked.
  • each layer of sensors In order to improve the accuracy of the electronic whiteboard, more than one layer of sensors are stacked together, and each sensor The sensing units on the layer are staggered. The intervals of the sensing units of each layer are the same or different.
  • each block is provided with an antenna array in the X and Y directions to draw electrical signals.
  • the connection device, each block is connected by an electrical connection device led out by a wire.
  • connection device is a pin connection device or a flexible printed circuit device or a point-to-point (PIN-PIN) connection device or a solder joint (VGA) hot-melt connection device or an ultrasonic welding device or a pad welding device or a puncture connection device.
  • PIN-PIN point-to-point
  • VGA solder joint
  • the control circuit includes signal amplification and filtering acquisition, data processing, and is also provided with a signal output control circuit and / or a storage device.
  • the signal output device includes a cable with a computer standard data interface or a wireless data exchange device RF transmitter / receiver.
  • the signal output device is connected to a computer and / or printer or external data storage device or a telephone line through a modem auxiliary device.
  • control circuit and the induction layer are directly connected as a whole.
  • the components of the control circuit are directly arranged on the output of the antenna array, and the control circuit is arranged in the body.
  • the control circuit is connected to the output end of the flexible printed circuit (FPC) antenna array, and a device for the control circuit is directly arranged on the output end.
  • FPC flexible printed circuit
  • the components of the control circuit are arranged on a printed circuit board separated from the induction layer, and the antenna array output end of the induction layer is connected to the corresponding input pins of the printed circuit board by crimping or plugging or welding.
  • the output end of the antenna array of the induction layer is arranged between the hard pressing sheet and the printed circuit board.
  • a buffer layer is provided between the hard pressing sheet and the antenna array output end. The hard pressing sheet, the buffer layer and the antenna array output end The screw connection is crimped on the printed circuit board, and the output end of the antenna array is connected with the corresponding input pin of the printed circuit board.
  • the control circuit is integrated with the main body, and can be installed on the peripheral frame of the main body.
  • the control circuit is arranged outside the body, is connected to the body through an electrical connection device, and the antenna of the induction layer
  • the output end of the array is connected to the output interface of the induction layer by crimping, plugging or welding.
  • the control circuit is provided with an interface matching the electrical connection device of the induction layer.
  • the output end of the antenna array of the induction layer is disposed between the hard pressing sheet and the electrical connection device.
  • a buffer layer is provided between the hard pressing sheet and the antenna array output end. The hard pressing sheet, the buffer layer and the antenna array output end are screwed. It is crimped to the electrical connection device, and the output end of the antenna array is connected to the corresponding input pin of the electrical connection device.
  • the sensor layer output interface and control circuit interface are pin-type connection devices or flexible printed circuit devices or point-to-point (PIN-PIN) connection devices or solder joints (VGA) hot-melt connection devices or ultrasonic welding devices or pad welding devices or punctures Connection device.
  • PIN-PIN point-to-point connection devices
  • VGA solder joints
  • the main body frame of the electronic whiteboard is provided with a bracket, and the main body is mounted on the bracket.
  • the control circuit is arranged in the bracket, and the interface is arranged on the bracket.
  • the position of the output interface of the induction layer corresponds to the control circuit.
  • the writing input part of the electronic whiteboard and the protective frame surrounding it are made of flexible and rollable material.
  • One side of the main body of the electronic whiteboard is fixed in the reel, two ends of the reel are provided with a torsion spring for closing the main body, and a positioning buckle is provided at the other end of the main body.
  • the control circuit can be arranged in the reel.
  • the structure of the present invention is simple and reasonable, and the manufacturing process is simple, which greatly reduces the cost of the electronic whiteboard, facilitates maintenance, and greatly improves the accuracy of induction, can be widely popularized, and solves the problem of digitization in this link. It has further enriched the form of contemporary digital products, and produced an application model that uses one of the main channels of electronic whiteboards for communication.
  • FIG. 1 is a schematic diagram of a three-dimensional structure according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of the overall structure of a sensing unit formed by the X-, Y-axis direction antenna array in the sensing layer of the present invention;
  • FIG. 5 is a schematic diagram of the principle of induction signal generation and input pen position recognition according to the present invention.
  • FIG. 6 is a schematic diagram of the structure and electrical connection interface of more than one stitching of the induction layer of the present invention
  • FIG. 7 is a schematic diagram of the structure of two layers of induction stacking of the present invention.
  • FIG. 8 is a schematic structural diagram of a connection relationship between a sensing layer and a control circuit of the present invention.
  • FIG. 9 is a schematic structural diagram of a connection relationship between an output end of an antenna array and a corresponding input pin of a printed circuit board according to the present invention.
  • FIG. 10 is a schematic diagram of a three-dimensional structure according to the second embodiment of the present invention.
  • the present invention is an electronic whiteboard with a built-in diaphragm antenna array grid electromagnetic induction layer.
  • the electronic whiteboard includes a writing input portion, a covering frame 1 surrounding the periphery, and a control circuit device.
  • the writing input portion is mostly
  • the layer structure is sandwiched in the frame and includes a surface writing layer 2, an input sensing layer 5 and a bottom layer 4.
  • the input sensing layer 5 is provided between the writing layer 2 and the bottom layer 4.
  • the output of the sensing layer 5 is connected to the control circuit.
  • a shielding layer 6 is further provided behind the induction layer 5, and the shielding layer 6 can effectively overcome the electromagnetic interference of the induction layer 5 to the control circuit.
  • a buffer layer 7 is also provided between the sensing layer 5 and the bottom layer 4, or a buffer layer 7 is also provided between the sensing layer 5 and the shielding layer 6.
  • the function of the buffer layer 7 is to maintain a reasonable gap between the sensing layer and the writing plane and the shielding layer 6.
  • the pen's electromagnetic signal emission has electromagnetic signals generated whether under pen pressure or not, for easy control. Of course, it can be made without the pen being pressed and no signal. In addition, the pen can also be stressed. It should be realized on the pen through different frequencies.
  • the sensing layer 5 may also be antenna arrays 52 and 51 printed on the insulating diaphragm 55 along the X and Y axis directions, respectively.
  • the space surrounded by each grid constitutes one Duction unit 53.
  • the insulating diaphragm 55 is made of film.
  • the sensing layer 5 may be an antenna array formed by copper-platinum etching on the insulating diaphragm 55, a flexible printed circuit (FPC) antenna array, or a silver paste or a silver paste carbon paste printed on the insulating diaphragm. Antenna array of mixed material shield.
  • the sensing layer can be printed on both sides of the insulating diaphragm, or printed on one side of the insulating diaphragm, and the two layers of the insulating diaphragm are stacked.
  • the sensing units 53 on each sensing layer are staggered.
  • the interval of the sensing units 53 in each layer may be the same or different.
  • the intervals of the sensing units 53 in different layers are different in size. After the sizes are stacked, the interval of the inevitable coordinates is reduced, which improves the accuracy of sensing.
  • the sensing units 53 of the same size are stacked together, because the positions of each other are staggered, the coordinate interval is also reduced, thereby improving the sensitivity of the electronic whiteboard.
  • One or more electromagnetic induction layers 5 and 5 with a diaphragm can be spliced together, and each block is provided with The X and Y direction wires lead out the electrical connection devices 56 and 57, and the blocks are connected by the wire lead electrical connection devices 56 and 57.
  • connection devices 56 and 57 may be a pin connection device or a flexible printed circuit device or a point-to-point (PIN-PIN) connection device or a solder joint (VGA) hot-melt connection device or an ultrasonic welding device or a pad welding device or a puncture Connection device.
  • PIN-PIN point-to-point
  • VGA solder joint
  • the signal output device of the electronic whiteboard is a wired cable connection device or a wireless data exchange device.
  • the wired cable connection device is a cable with a USB connection port;
  • the wireless data exchange device is a radio frequency transmission / connection Receiver. This can complete local storage, or remote transmission, or directly set up an Internet device to package the input content into a data packet and send it.
  • the signal output device is connected to a computer and / or printer, and the information collected on the whiteboard is directly edited and printed.
  • the signal output device is directly connected to a data storage device. After the data is stored, it can be imported into the computer using a mobile storage device. , Or other devices.
  • the specific circuit structures of the signal output device and the peripheral equipment are consistent with the connection methods in consumer electronics applications in other fields, and are not repeated here.
  • control circuit and the induction layer are directly connected as a whole.
  • the components of the control circuit are directly arranged on the output of the antenna array, and the control circuit is arranged in the body.
  • the control circuit is connected to the output end of the flexible printed circuit (FPC) antenna array, and a device for the control circuit is directly arranged on the output end.
  • FPC flexible printed circuit
  • the components of the control circuit are arranged on a printed circuit board separated from the induction layer, and the antenna array output end of the induction layer is connected to the corresponding input pins of the printed circuit board by crimping or plugging or welding.
  • the antenna array output end of the induction layer is disposed between the hard pressing sheet 600 and the printed circuit board 500, and a buffer layer 7 is provided between the hard shield pressing sheet 600 and the antenna array output end.
  • the chip 600, the buffer layer 7 and the antenna array output end are screwed and crimped to the printed circuit board 500 through a nut 700, and the antenna array output end is connected to the input pin 511 corresponding to the printed circuit board 500.
  • control circuit When the control circuit is integrated with the main body, it can be installed in a covering frame around the main body.
  • control circuit 8 is provided outside the body, and is connected to the body through an electrical connection device.
  • the antenna array output terminal of the induction layer 5 is crimped, plugged in, or connected to the sensor layer output interface 82 in an early connection manner.
  • the control circuit is provided with an interface 81 matching the electrical connection device of the induction layer.
  • the sensing layer output interface 82 and the control circuit interface 81 may be pin-type connection devices or flexible printed circuit devices or point-to-point (PIN-PIN) connection devices or solder joints (VGA) hot-melt connection devices or ultrasonic welding devices or pads. Connection device or puncture connection device.
  • PIN-PIN point-to-point
  • VGA solder joints
  • Connection device or puncture connection device The separate setting of the control circuit and the main body provides convenience for the electronic whiteboard to be upgraded at any time, and at the same time, it is easy to maintain and maintain.
  • a bracket 3 is provided outside the body frame 1, and the body frame 1 is provided on the bracket 3.
  • the control circuit 8 is arranged in the bracket 3, the interface is arranged on the bracket 3, and the position of the sensing layer output interface 82 in the body corresponds to the control circuit interface 81.
  • Fig. 5 The working mechanism of the present invention is shown in Fig. 5:
  • P is the signal input end of the pen, and there is a large conductor P on the pen head, and the plane coordinate position of the pen is obtained to determine the position of the pen.
  • the electromagnetic pen continuously emits electromagnetic signals.
  • the electromagnetic signal passes through a certain position of the induction antenna, and the antenna at this position senses the signal.
  • the induction generating device passes the induced position signal through the X, Y direction leads.
  • the input port of the transmission control identification circuit is calculated by the CPU of the processing circuit through array gating, control method, band-pass filtering, detection rectification, and analog-to-digital conversion to determine the position coordinates and various working states of the electromagnetic signal at the induction antenna.
  • the communication interface is sent to the computer to control the computer to identify, display, record, etc.
  • a Z-axis pressure sensor is provided at the rear of the pen tip of the input pen, and the output of this sensor is connected to the control end of the electromagnetic wave generating device. In this way, the transmitted signal of electromagnetic waves is changed by pressing, so that the pressure (input signal) of the pen tip can be more accurately recognized.
  • the signal output device is a wired cable connection device or a wireless data exchange device.
  • the wired cable connection device is a cable with a USB connection port;
  • the wireless data exchange device is a radio frequency transmitter / receiver.
  • the signal output device is connected to a computer and / or printer, and the information collected on the whiteboard is directly edited and printed.
  • the signal output device is directly connected to a data storage device. After the data is stored, it can be imported into the computer using a mobile storage device. , Or other devices.
  • the specific circuit structures of the signal output device and the peripheral equipment are consistent with the connection methods in consumer electronics applications in other fields, and are not repeated here.
  • the data sensed and output by the whiteboard of the present invention is the data after recognition, which is converted into data of the movement track of the pen, or is unrecognized data, which is position coordinate data of the pen at each time.
  • the present invention is a portable electronic whiteboard with a built-in wire grid electromagnetic induction layer.
  • the main body includes a writing input part, a protective frame surrounding the periphery, and a control circuit device.
  • the writing input part has a multilayer structure. It is sandwiched in the protective frame and includes the surface writing layer 2 and the bottom layer 4.
  • An input sensing layer 5 is provided between the writing layer 2 and the bottom layer 4. The output of the sensing layer 5 is connected to the control circuit, and the writing input part is surrounded by it.
  • the surrounding protective frame 1 is made of flexible and rollable material.
  • one side of the main body is fixedly connected to the reel 100, and two ends of the reel 100 are provided with a torsion spring for closing the main body, and a positioning buckle 101 is provided at the other side of the main body.
  • the surface writing layer 2, the sensing layer 5, the buffer layer 7, the shielding layer 6, and the bottom layer 4 of the electronic whiteboard are all flexible materials that can be bent.
  • One side of the main body is fixed in the reel 100.
  • Two ends of the main shaft are provided with a torsion spring for closing the main body.
  • a positioning buckle 101 is provided at the other end of the main body for positioning of the electronic whiteboard when it is fully rolled.
  • Its reel, torsion spring and corresponding mechanism are similar to the existing rolling mechanisms such as projection screens, rolling curtains, and the like, and are not repeated here.
  • Retractable electronic whiteboard It is convenient to carry, hang and hang, and saves space. For beautiful appearance and completeness, the control circuit can be set in the reel 100.

Description

内置隔膜天线阵列网格电磁感应层的电子白板
技术领域
本发明涉及一种电子白板， 尤其是一种成本低、 制造简便并且识别精度高 的内置隔膜天线阵列网格电磁感应层的电子白板， 属于电子技术领域。 背景技术
在工作和生活中， 人们常常需要使用白板完成记录或讨论事项。 例如在 教学和会议中， 白板虽然能够较好地书写上文字、符号等， 也能够方便地擦除， 但是其做记载的内容是一次性地出现， 而无法再现和存储。 因此， 日益难以满 足当前数字化生活和工作的应用需求。
随着电子技术的发展， 无论是在学校的授课环境， 还是部门的研讨过程 中， 开始使用了电子白板。 这种产品能够及时地将书写在白板上的符号， 转换 为电信号， 输入给所连接的计算机， 通过计算机再直接完成编辑或打印、 传输 等远程信息交换。 现有的电子白板由于感应面积较大， 或者不能制作， 例如印 刷线路板的腐蚀制作电磁感应式； 或者由于成本太高， 而不能采用触摸屏等电 阻式的感应结构， 因此电子白板多采用输入笔与电子白板之间的超声波发射、 接收方式进行操控， 其成本依然较高， 而且精度较低， 大大限制了这类产品的 应用。 导致这个信息交流和产生的环节迟迟不能够被广泛地数字化。
综上所述， 现有产品都存在着明显地识别率低， 精度差， 而且成本较高， 制造困难等， 以至于不能够被广泛应用的缺点。 发明内容
本发明的目的在于针对现有技术之不足而提供一种内置隔膜天线阵列网 格电磁感应层的电子白板， 它成本较低、 生产制造简便， 而且数据采集识别的 精度高。
本发明的又一目的在于提供一种内置隔膜天线阵列网格电磁感应层的电 子白板， 使用寿命长， 维护简单。
本发明的目的是通过如下的技术方案实现的：
一种内置隔膜天线阵列网格电磁感应层的电子白板， 它包括书写输入部 分、 围设在其周边的包覆框部分以及控制电路装置， 书写输入部分为多层结构， 夹设在框架内， 包括表面书写层、 输入感应层和底层， 输入感应层设有书写层 和底层之间， 感应层的输出接控制电路， 感应层为设置在绝缘隔膜上的沿 X、 Y轴方向的天线阵列， 每个阵列网格所围设的空间构成一个感应单元。
感应层的面积与书写层和底层同样大小或小于书写层和底层， 即感应层 完全附设或者部分附设在书写层和底层之间。 感应层附设位置在书写输入部分 书写范围的一侧或中央。
为了增强设备的抗干扰的能力， 在感应层后还设有屏蔽层。 同时， 感应 层与底层之间还设有緩冲层， 或感应层与屏蔽层之间还设有緩冲层。
感应层还可以为印制在绝缘隔膜上、 分别沿 X、 Y轴方向的天线阵列， 其 每个网格所围设的空间构成一个感应羊元。 为了降低成本， 绝缘隔膜为菲林材 质。 感应层可以是覆在绝缘隔膜上的铜铂蚀刻后形成的天线阵列， 可以是软性 印刷线路（FPC ) 天线阵列， 还可以是印制在绝缘隔膜上为银浆或银浆碳浆混 合材质的天线阵列。
感应层可印制在绝缘隔膜两面上， 或印制在绝缘隔膜一面上， 两层绝缘 隔膜叠放构成。
为了提高电子白板的精度， 将一层以上的感应层叠设在一起， 且各感应 层上的感应单元为交错布置。 每层感应单元的间隔大小相同或不同。
为了增大电子白板的书写面积， 感应层的面积也要相应增大， 可以将蚀 刻或印制有天线阵列的一块以上隔膜相互拼接构成， 各块上分别设有 X、 Y 方 向天线阵列引出电气连接装置， 各块之间通过导线引出电气连接装置连接。
连接装置为针式连接装置或软性印刷线路装置或点对点 （PIN- PIN )连接 装置或焊点 （VGA ) 热熔连接装置或超声波焊接装置或焊盘焊接装置或刺破式 连接装置。
其控制电路包括信号放大滤波采集、 数据处理， 还设有信号输出控制电 路和 /或存储装置。 信号输出装置包括具有计算机标准数据接口的电缆或无线 数据交换装置射频发射 /接收器。
信号输出装置接计算机和 /或打印机或外部数据存储设备或通过调制解调 辅助装置接电话线。
控制电路与感应层两者为一体直接连接， 控制电路的器件直接设置在天 线阵列输出端上， 控制电路设置本体内。
控制电路连设在软性印刷线路（FPC )天线阵列的输出端， 其上直接设置 控制电路的器件。
控制电路的器件设置在与感应层分体设置的印刷线路板上， 感应层的天 线阵列输出端以压接或插接或焊接方式与印刷线路板对应的输入引脚连接。
感应层的天线阵列输出端设置在硬质压片与印刷线路板中间， 在硬质压 片与天线阵列输出端之间设有緩冲层， 硬质压片、 緩冲层与天线阵列输出端螺 合压接在印刷线路板上， 天线阵列输出端与印刷线路板对应的输入引脚连接。
控制电路与本体一体设置， 可设置在本体的周边外框。
控制电路设置在本体外， 与本体通过电气连接装置连接， 感应层的天线 阵列输出端以压接或插接或焊接方式与感应层输出接口连接， 控制电路上设置 与感应层的电气连接装置匹配的接口。
感应层的天线阵列输出端设置在硬质压片与电气连接装置中间， 在硬质 压片与天线阵列输出端之间设有緩冲层， 硬质压片、 緩沖层与天线阵列输出端 螺合压接在电气连接装置上， 天线阵列输出端与电气连接装置对应的输入引脚 连接。
感应层输出接口和控制电路接口为针式连接装置或软性印刷线路装置或 点对点 （PIN- PIN )连接装置或焊点 （VGA )热熔连接装置或超声波焊接装置或 焊盘焊接装置或刺破式连接装置。
电子白板的本体框架外设有支架， 本体架设在支架上。 控制电路设置在 支架内，接口设置在支架上，感应层输出接口在本体的位置对应控制电 ^矣口。
为了携带、 挂放方便， 电子白板的书写输入部分、 围设在其周边的保护 边框为柔性可卷曲材质。
在电子白板本体的一侧边固接在卷轴内， 卷轴两端设有收合本体的扭簧， 本体另一侧边端设有定位卡扣。 控制电路可设置在卷轴内。
根据上述技术方案分析可知， 本发明结构简单合理， 制作工艺简单， 大 大降低了电子白板的成本， 维护方便， 而且较大地提高了感应精度， 能够被广 泛地普及， 解决了该环节数字化的问题， 更加丰富了当代数字化产品的形态， 产生利用电子白板主渠道之一进行交流的应用模式。 附图说明
图 1为本发明实施例一立体结构示意图；
图 2为本发明感应层沿 Y轴方向蚀刻或印制的天线阵列结构示意图； 图 3为本发明感应层沿 X轴方向蚀刻或印制的天线阵列结构示意图； 图 4为本发明感应层 X、 Y轴方向天线阵列所构成的感应单元整体结构示 意图；
图 5为本发明感应信号产生、 输入笔位置识别原理示意图；
图 6为本发明感应层一块以上拼接的结构和电气连接接口示意图； 图 7为本发明两层感应层叠放的结构示意图；
图 8为本发明感应层与控制电路分体设置连接关系结构示意图；
图 9 为本发明天线阵列输出端与印刷线路板对应的输入引脚连接关系结 构示意图；
图 10为本发明实施例二立体结构示意图。
具体实施方式
下面结合附图和具体实施方案对本发明做进一步地详细说明。
. 实施例一：
如图 1 所示， 本发明为一种内置隔膜天线阵列网格电磁感应层的电子白 板， 包括书写输入部分、 围设在其周边的包覆框 1部分和控制电路装置， 书写 输入部分为多层结构， 夹设在框架内， 包括表面书写层 2、 输入感应层 5和底 层 4， 输入感应层 5设有书写层 2和底层 4之间， 感应层 5的输出接控制电路。
如图 1 所示， 为了增强设备抗干扰能力， 感应层 5后还设有屏蔽层 6 , 该屏蔽层 6能够有效地克服感应层 5电磁对控制电路工作的干扰。
感应层 5与底层 4之间还设有緩冲层 7 , 或感应层 5与屏蔽层 6之间还 设有緩冲层 7。 緩冲层 7的功能在于保持感应层与书写平面以及屏蔽层 6之间 有合理的间隙。 此外， 笔的电磁信号发射无论在笔压下或未压下均有电磁信号 发生， 以方便控制。 当然可以做成笔未压下无信号， 此外笔还可以做到压力感 应， 均在笔上实现通过频率不同体现。
如图 2、 3、 4所示， 感应层 5还可以为印制在绝缘隔膜 55上、 分别沿 X、 Y轴方向的天线阵列 52、 51 , 其每个网格所围设的空间构成一个感应单元 53。 为了降低成本， 绝缘隔膜 55为菲林材质。 感应层 5可以是覆在绝缘隔膜 55上 的铜铂蚀刻后形成的天线阵列， 可以是软性印刷线路（FPC )天线阵列， 还可 以是印制在绝缘隔膜上为银浆或银浆碳浆混合材盾的天线阵列。
感应层可印制在绝缘隔膜两面上， 或印制在绝缘隔膜一面上， 两层绝缘 隔膜叠放构成。
图 7所示， 为提高电子白板的精度， 将一层以上的感应层 5和 5， 叠设 在一起， 各感应层上的感应单元 53交错布置。 每层感应单元 53的间隔大小可 以相同或者不同。 各层感应单元 53 的间隔大小不同， 大小叠放后， 必然坐标 的间隔缩小， 也就提高了感应的精度。 感应单元 53 大小相同的感应层叠放在 一起时， 因为彼此的位置是交错布置的， 坐标间隔也缩小了， 从而提高了电子 白板的灵敏度。
如图 6 所示， 如果电子白板的书写面积较大， 感应层的面积也要相应扩 大， 可以将一块以上带有隔膜的导线电磁感应层 5和 5， 相互拼接构成， 各块 上分别设有 X、 Y方向导线引出电气连接装置 56和 57 , 各块之间通过导线引 出电气连接装置 56和 57连接。
上述的连接装置 56和 57 可以为针式连接装置或软性印刷线路装置或点 对点 （PIN- PIN )连接装置或焊点（VGA )热熔连接装置或超声波焊接装置或焊 盘焊接装置或刺破式连接装置。
电子白板的信号输出装置为有线电缆连接装置或无线数据交换装置。 有 线电缆连接装置为具有 USB 连接口的电缆； 无线数据交换装置为射频发射 /接 收器。 这样可完成本地存储， 或远程传输， 或直接设置上网装置， 将输入的内 容打包为数据包， 发送。 当然， 信号输出装置接计算机和 /或打印机， 直接将 白板上感应采集的信息编辑、 打印； 再有， 信号输出装置直接接数据存储设备， 可将数据存储后， 利用移动存储装置导入到计算机中， 或其他设备中。 信号输 出装置与周边设备的具体电路结构与其他领域消费电子产品应用中的连接方式 一致， 在此不再赘述。
控制电路与感应层两者为一体直接连接， 控制电路的器件直接设置在天 线阵列输出端上， 控制电路设置本体内。
控制电路连设在软性印刷线路（FPC )天线阵列的输出端， 其上直接设置 控制电路的器件。
控制电路的器件设置在与感应层分体设置的印刷线路板上， 感应层的天 线阵列输出端以压接或插接或焊接方式与印刷线路板对应的输入引脚连接。
如图 9 所示， 感应层的天线阵列输出端设置在硬质压片 600与印刷线路 板 500中间， 在硬盾压片 600与天线阵列输出端之间设有緩冲层 7 , 硬质压片 600、 緩冲层 7与天线阵列输出端通过螺母 700螺合压接在印刷线路板 500上， 天线阵列输出端与印刷线路板 500对应的输入引脚 511， 连接。
控制电路与本体一体设置时， 可以设置在本体周边的包覆框内。
如图 8 所示， 控制电路 8设置本体外， 与本体通过电气连接装置连接， 感应层 5的天线阵列输出端以压接、 插接或 ;1：早接方式与感应层输出接口 82连 接， 控制电路上设置与感应层的电气连接装置匹配的接口 81。
感应层输出接口 82和控制电路接口 81可分别为针式连接装置或软性印 刷线路装置或点对点 （PIN- PIN )连接装置或焊点（VGA ) 热熔连接装置或超声 波焊接装置或焊盘悍接装置或刺破式连接装置。 控制电路与本体的分体设置， 为电子白板的随时升级提供了方便， 同时 便于维护和保养。
如图 1所示， 本体框架 1外设有支架 3 , 本体架 1设在支架 3上。 控制 电路 8设置在支架 3内， 接口设置在支架 3上， 感应层输出接口 82在本体的 位置对应控制电路接口 81。
本发明的工作机理如图 5所示： 图中 P是笔的信号输入端， 笔头上有一 较大的导体 P，， 求得笔的平面坐标位置， 从而确定笔的位置。
电磁笔不断地发射电磁信号， 当笔尖触及感应发生装置时， 其电磁信号 穿过感应天线某位置， 该位置的天线感应出信号， 由感应发生装置将感应的位 置信号通过 X、 Y 方向的引线传递控制识别电路的输入口， 经过阵列选通、 控 制方法、 带通滤波、 检波整流以及模数转换， 给处理电路的 CPU计算， 判定电 磁信号在感应天线的位置坐标和各种工作状态， 通过通信接口发送给计算机， 从而控制计算机识别、 显示、 记录等。
再有， 为得到书写时笔尖的压力， 提高信号位置感应的准确性， 输入笔 的笔尖后部设有 Z轴方向压力传感器， 该传感器的输出接电磁波发生装置的控 制端。 这样通过压触改变电磁波的发射信号， 从而更为确切地识別笔尖的压力 (输入信号）。
另外， 信号输出装置为有线电缆连接装置或无线数据交换装置。 有线电 缆连接装置为具有 USB连接口的电缆； 无线数据交换装置为射频发射 /接收器。 当然， 信号输出装置接计算机和 /或打印机， 直接将白板上感应采集的信息编 辑、 打印； 再有， 信号输出装置直接接数据存储设备， 可将数据存储后， 利用 移动存储装置导入到计算机中， 或其他设备中。 信号输出装置与周边设备的具 体电路结构与其他领域消费电子产品应用中的连接方式一致， 在此不再赘述。 本发明白板感应采集输出的数据为识别后数据， 转换为笔移动轨迹的数 据， 或者为未识别数据， 为笔的各时刻位置坐标数据。
实施例二：
如图 10 所示， 本发明为一种内置导线网格电磁感应层的便携式电子白 板， 它本体包括书写输入部分、 围设在其周边的保护边框以及控制电路装置， 书写输入部分为多层结构， 夹设在保护边框内， 包括表面书写层 2和底层 4 , 在书写层 2和底层 4之间设有输入感应层 5 , 感应层 5的输出接控制电路， 书 写输入部分、 围设在其周边的保护边框 1为柔性可卷曲材质。
如图 10所示， 本体设置一侧边固接在卷轴 100内 , 卷轴 100两端设有收 合本体的扭簧， 本体另一侧边端设有定位卡扣 101。
如图 10所示， 为了携带以及收挂方便， 电子白板的表面书写层 2、 感应 层 5、 緩冲层 7、 屏蔽层 6 以及底层 4均为可卷弯的柔性材质。 本体一侧边固 接在卷轴 100内， 卷轴两端设有收合本体的扭簧， 本体另一侧边端设有定位卡 扣 101 , 用于电子白板收卷完全时的定位。 其卷轴、 扭簧以及相应机构与现有 的投影幕布、 卷帘窗帘等卷收机构相类似， 在此不再赘述。 可卷收的电子白板 携带、 收挂方便， 节省空间。 为外型美观、 完整， 控制电路可设置在卷轴 100 内。
本实施例的其他技术特征与实施例一均相同， 详尽的实施方式可参见实 施例一的相关内容， 此处不再赘述。
以上实施例仅用以说明本发明而非限制， 尽管参照以上较佳实施例对本 发明进行了详细说明， 本领域的普通技术人员应当理解， 可以对本发明进行修 改、 变形或者等同替换， 而不脱离本发明的精神和范围， 其均应涵盖在本发明 的权利要求范围当中。

Claims

权利要求 书
1、 一种内置隔膜天线阵列网格电磁感应层的电子白板， 它包括书写输 入部分、 围设在其周边的包覆框部分以及控制电路装置， 书写输入部分为多层 结构， 夹设在框架内， 包括表面书写层、 输入感应层和底层， 输入感应层设有 书写层和底层之间， 感应层的输出接控制电路， 其特征在于： 所述的感应层为 设置在绝缘隔膜上的沿 X、 Y 轴方向的天线阵列， 每个阵列网格所围设的空间 构成一个感应单元。
2、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层的面积与书写层和底层同样大小或小于书写层 和底层， 即感应层完全附设或者部分附设在书写层和底层之间。
3、 根据权利要求 2 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的小于书写层和底层面积的感应层附设在书写输入部分 书写范围的一侧或中央。
4、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板，其特征在于： 所述的感应层后还设有用于增强设备的抗干扰能力的屏蔽层。
5、 根据权利要求 1或 2或 3或 4所述的内置隔膜天线阵列网格电磁感 应层的电子白板， 其特征在于： 所述的感应层与底层之间还设有緩冲层， 或感 应层与屏蔽层之间还设有緩冲层。
6、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的绝缘隔膜为菲林材质。
7、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层为覆在绝缘隔膜上的铜铂蚀刻后形成的天线阵 列。
8、 根据权利要求 7 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层为软性印刷线路（FPC )天线阵列。
9、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层为印制在绝缘隔膜上为银浆或银浆碳浆混合材 质的天线阵列。
10、 根据权利要求 9 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层为印制在绝缘隔膜两面上， 或印制在绝缘隔膜 一面上， 两层绝缘隔膜叠放构成。
11、 根据权利要求 1或 2或 3或 6或 7或 8或 9或 10所述的内置隔膜天 线阵列网格电磁感应层的电子白板， 其特征在于： 所述的感应层为一层以上， 各感应层上的感应单元彼此交错布置。
12、 根据权利要求 11所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的每层感应单元的间隔大小相同或不同。
13、 根据权利要求 1或 2或 3或 6或 7或 8或 9或 10所述的内置隔膜天 线阵列网格电磁感应层的电子白板， 其特征在于： 所述的感应层为一块以上蚀 刻或印制有天线阵列的隔膜相互拼接构成， 各块上分别设有 X、 Y轴方向天线 阵列引出电气连接装置， 各块之间通过导线引出电气连接装置连接。
14、 根据权利要求 13所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的连接装置为针式连接装置或软性印刷线路装置或点对 点 （PIN- PIN )连接装置或焊点 （VGA ) 热熔连接装置或超声波焊接装置或焊盘 悍接装置或刺破式连接装置。
15、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的控制电路包括信号放大滤波采集、 数据处理， 还设有 信号输出控制电路和 /或存储装置。
16、 根据权利要求 15所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的信号输出装置包括具有计算机标准数据接口的电缆或 无线数据交换装置射频发射 /接收器。
17、 根据权利要求 16所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的信号输出装置接计算机和 /或打印机或外部数据存储 设备或通过调制解调辅助装置接电话线。
18、 根据权利要求 1或 2或 3或 6或 7或 8或 9或 10或 15或 16或 17 所述的内置隔膜天线阵列网格电磁感应层的电子白板， 其特征在于： 所述的控 制电路与感应层两者为一体直接连接， 控制电路的器件直接设置在天线阵列输 出端上， 控制电路设置本体内。
19、 根据权利要求 18所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的控制电路连设在软性印刷线路（FPC ) 天线阵列的输 出端， 其上直接设置控制电路的器件。
20、 根据权利要求 1或 6或 7或 8或 9或 10或 15或 16或 17所述的内 置隔膜天线阵列网格电磁感应层的电子白板， 其特征在于： 所述的控制电路的 器件设置在与感应层分体设置的印刷线路板上， 感应层的天线阵列输出端以压 接或插接或焊接方式与印刷线路板对应的输入引脚连接。
21、 根据权利要求 20所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层的天线阵列输出端设置在硬质压片与印刷线路 板中间， 在硬质压片与天线阵列输出端之间设有緩冲层， 硬质压片、 緩冲层与 天线阵列输出端螺合压接在印刷线路板上， 天线阵列输出端与印刷线路板对应 的输入引脚连接。
22、 根据权利要求 21所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的控制电路与本体一体设置， 可设置在本体的周边外框。
23、 根据权利要求 20所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的控制电路设置在本体外， 与本体通过电气连接装置连 接， 感应层的天线阵列输出端以压接或插接或焊接方式与感应层输出接口连 接， 控制电路上设置与感应层的电气连接装置匹配的接口。
24、 根据权利要求 23所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层的天线阵列输出端设置在硬质压片与电气连接 装置中间， 在硬盾压片与天线阵列输出端之间设有緩冲层， 硬质压片、 緩冲层 与天线阵列输出端螺合压接在电气连接装置上， 天线阵列输出端与电气连接装 置对应的输入引脚连接。
25、 根据权利要求 23所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的感应层输出接口和控制电路接口为针式连接装置或软 性印刷线路装置或点对点 （PIN- PIN )连接装置或焊点 （VGA )热熔连接装置或 超声波焊接装置或焊盘焊接装置或刺破式连接装置。
26、 根据权利要求 1 所述的内置隔膜天线阵列网格电磁感应层的电子白 板， 其特征在于： 所述的本体框架外设有支架， 本体架设在支架上。
27、 根据权利要求 1或 15或 16或 17或 26所述的内置隔膜天线阵列网 格电磁感应层的电子白板， 其特征在于： 所述的控制电路设置在支架内， 接口 设置在支架上， 感应层输出接口在本体的位置对应控制电路接口。
28、 根据权利要求 1 所述的内置导线网格电磁感应层的便携式电子白 板， 其特征在于： 所述的书写输入部分、 围设在其周边的包覆框为柔性可卷曲 材质， 电子白板本体可曲卷便携。
29、 根据权利要求 28 所述的内置导线网格电磁感应层的便携式电子白 板， 其特征在于： 所述的本体设置一侧边固接在卷轴内， 卷轴两端设有收合本 体的扭簧， 本体另一侧边端设有定位卡扣。
30、 根据权利要求 1或 15或 16或 17或 28或 29所述的内置导线网格电 磁感应层的便携式电子白板， 其特征在于： 所述的控制电路可设置在卷轴内。
PCT/CN2002/000689 2001-12-29 2002-09-27 An electromagnetic induction electronic board with antenna arrayed in gridding inside WO2003056418A1 (en)

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JP2003556875A JP3989441B2 (ja) 2001-12-29 2002-09-27 隔膜アンテナ配列格子電磁感応層内蔵の電子白板
EP02771993A EP1469376A4 (en) 2001-12-29 2002-09-27 ELECTRONIC CIRCUIT BOARD FOR ELECTROMAGNETIC INDUCTION WITH AN INTERIOR ARRAY GRADIENT ANTENNA
KR1020047010326A KR100724834B1 (ko) 2001-12-29 2002-09-27 격막 안테나 어레이 그리드식 전자기 감응층이 내장된전자 화이트보드
US10/500,419 US7486270B2 (en) 2001-12-29 2002-09-27 Electromagnetic induction electronic board with antenna arrayed in gridding inside
AU2002338136A AU2002338136A1 (en) 2001-12-29 2002-09-27 An electromagnetic induction electronic board with antenna arrayed in gridding inside

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN01279677.8U CN2512043Y (zh) 2001-12-29 2001-12-29 具有柔性隔膜式电磁感应发生装置的电子白板
CN01279677.8 2001-12-29
CN 02130933 CN1242357C (zh) 2002-09-17 2002-09-17 内置隔膜天线阵列网格电磁感应层的电子白板
CN02130933.7 2002-09-17

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EP1469376A1 (en) 2004-10-20
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US20050052424A1 (en) 2005-03-10

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